A guest typed an uninvited plus-one into the dietary-notes box

A guest added a plus-one to our RSVP form by typing a name into the dietary-notes box.

There was no plus-one field.

The invitation was addressed to my cousin Eric alone. When he submitted his response, he selected one attendee, chose the chicken entrée and wrote, “My date, Tasha, is vegetarian.”

I stared at the screen long enough for the RSVP website to log me out.

Eric has been seeing Tasha for about six weeks. I have not met her. That does not automatically make her unimportant, and I am not trying to measure relationships by anniversary dates. We simply did not give every single guest an open invitation because the room has a fixed capacity.

Several people are attending without dates, including two close friends who asked directly and accepted the answer when we said no.

My mother thinks we should let Tasha come.

Her argument is that Eric will know few people at the wedding and may leave early if he attends alone. She also says confronting him over one seat will create more family tension than finding another place setting.

There is technically space because two guests recently declined.

That fact has become the entire debate.

My fiancé says the empty seats do not belong automatically to whoever ignores the invitation. We have other people we would invite if we reopen the list. One of his coworkers has become a real friend during the past year, and we left her off only because we reached capacity.

Inviting Tasha because Eric wrote her into a notes box would mean his confidence outranked everyone else’s courtesy.

I agree with him.

I also hate the idea of calling my cousin and saying, essentially, “We saw the woman you added. Please subtract her.”

Eric is not usually entitled. He can be careless about invitations and may genuinely believe adults automatically receive a guest. Our extended family has had larger, more informal weddings where that was often true. He may not realize he crossed a line because the line was obvious only to us.

I drafted a message:

“Hi Eric, we’re excited you can come. We saw Tasha’s name in the meal notes, but the invitation was for one guest and we’re unable to add another person. Please let me know if that changes your RSVP.”

It is clear. It also sounds like a customer service response to a failed reservation.

My sister suggested calling instead so he can hear that I am not angry. My fiancé worries a call will turn a factual correction into a negotiation.

He is probably right. I can already hear Eric saying he assumed, then mentioning the two recent declines, then asking whether Tasha can come if someone else cancels. Suddenly I am maintaining a private waitlist created by an etiquette violation.

There is another complication. We did give named partners to guests whose relationships were established when invitations went out, even if we had not met them. Eric may compare Tasha with those partners and conclude we are judging the seriousness of his relationship.

The actual distinction is not whether we approve of Tasha. It is whether a named guest was included on the invitation.

That distinction is clean on paper and emotionally messy in a family.

I do not want to punish him. I want the invitation to mean what it said.

If we tell him no, he may decline, and I will be disappointed. If we say yes, I will resent the fact that a boundary disappeared the moment someone stepped over it. If we put Tasha on a waitlist, we create a category we have not offered to anyone else.

Should I send the short message, call him or use the open seat and avoid the conflict? Does available capacity change the answer when the real problem is that the guest never asked?